Car roof



Nov. 24, 1925- 1,562,433

'C. D. BONSALL' cm aoov Filed Nov. 19. 1924 2 Sheets-Sheet 1 C. D. BONSALL cm ROOF Filed Nov. 19. 1924 2 SheetE-Shpef 2 Nov. 24 1925.

54 7 Q ,QVENTOHI ///s Arron/Ens Patented Nov. 24, 1925.

CHARLES DAVID EONSALT 1 0F PITit'ElBUItG I-I, PENNY PATENT OFFliIltl.

.fVAliTIA... ASSIGITOIGL TD I. .511.

MURPHY GOlViPANY. OF NEW KEMJILETG-TUBL IPEI'IILiMiLVANIA, A CORPORATION 0 1:

PENNSYLVANIA.

CAR ROOF.

Application filed November 19, 1924.

.7 '0 all IO/M'lft 27/- muy (201': com

Be it known that l CirrAnnns l).\V!D BonsALL, a citizen ot the United States. and a resident of the city of Pittslnirgh. in the county oi: Allegheny and State of Pennsylvania, have invented a new and useful linprovelnent in Car Roots, of which the tollowing is a specification.

This invention relates principally to tle. ;i ble car roofs of the kind wherein the metal roof sheets extend from eaves to eaves ot the car between carlines and are loosely connected along their adjacent side margins by wcatherprooting caps that are secured to the substructin'e and thus serve to hold the root sheets down on the car. The principal object of the present invention is to produce a root of simple and economical construction that is easy ol. application and that will be stiffer and stronger than previous roots of the same weight andmetal. The invention consists principally in increasing the strength and rigidity of the carlines by combining the carlines and weatherprooting caps so that said caps cooperate with said carlines in carrying the root load and resisting stresses; and it also consists in the construction and arrangements of parts hereinafter described and claimed.

In the accompanying drawing, wherein like symbols refer to like parts wherever they occur,

Fig. l is a plan View oi a. portion of the car root embodying my invention;

Fig. 2 is an enlarged transverse section through one-halt ot the roof on the line 22 in Fig. 1;

Fig. 3 is an enlarged cross-section through one of the seams or joints adjacent to the ridge on the line 3-3 in Fig. 2;

Fig. 4 is a similar cross-section adjacent to the eaves on the line 44 in Fig. 2;

Fig. 5 is a fragmentary section through the side plate of a modified root construction, showing the adjacent portion of the root sheet in elevation and the end portion of the carline in elevationya nd Fig. 6 is a cross-section through said carline and the portions of the sheets adjacent thereto.

The present root comprises Z-bar side plates 5 that are connected by carlines 6 of substantially inverted channel-shaped section with outwardly projecting lateral base Serial No. 750,840.

flanges 7 attho bottom of their side walls. The Z-loar side plates 5 are preferably arranged with their webs vertical and with their top flanges extending inwardly horizontally; and the eaves end portions of the carlines rest flatwise on the inwardly projecting flanges of the side plates and have their base flanges rigidly secured thereto by rivets 8.

Boot sheets 9 extend from caves to caves between carlines and are supported at their eaves ends on wooden filler strips 10. Said. strips extend from carliue to carline and are secured to the top flanges of the side plates by bolts 11. The root sheets are supporter l between the ridge and eaves by means o'l pnrlins 12 which extend longitudinally of the ear beneath the carlines and are bolted. thereto. The roof sheets are also supported. at the ridge by a ridge pole 13, which also passes beneath the carlines and is bolted thereto. The roof sheets are supported on the tiller strips, purlins, and theridge pole above the plane of the lateral base flanges of the carlines and have upwardly offset side marginal port-ions 14. that are inclined upwardly and terminate in upstanding side marginal flanges 15 that extend from end to end of the sheets. The root sheets are also provided. at their eaves ends with depending flanges 16 which orerhang the webs of the side plates and terminate in inturned, portions 17 that are spaced away from the webs of the side plates.

l /catl1erpr oling nien'lbcrs in the form of inverted channel-shaped seam covers A straddle the upstanding side marginal flanges 15 of adjacent root sheets, the inside width of said. seain covers being sutlicient to leave a space between each side Wall thereof and said adjacent side marginal flanges. The webs 18 of the channel-shaped seam caps A bear tlatwise against the webs of the channel-shaped earlines and are rivet ed or otherwise rigidly secured thereto. The channel-shaped seam covers are provided along their lower edges withoutwardly projecting lateral base flanges 19 that ron'form to the slope of the upwardly offset side marginal portions ll of the root sheets and are arranged to rest or bear flatwise on said portions, thereby holding the sheets down on the car. The eaves end portions of the seam caps are provided with depending eaves the open ends oi t l e carlines and the eaves cori'icrs oit' adjz'nrent sheets and teri'ninate in inturned portions Ell that are spaced away from the end lfltlli2"t-i ol the root sheets.

By the arrangement described, the seam covers not only form a watertight seam or joint between adjacent root sheets, but also serve to hold the sheet down on the car, while permitting said sheets to accommodate then'iselves to the distortion of the root by slning thereon. it is particularly noted that the seam caps are rigidly secured flatwise to the tops of the carlines and thus t'uuction not only as weatherproofing mean bers; but also as load carrying members which :ooperate with the c rlines to increase their load carrying capacity and to resist any stresses that tend to twist then: out of shape.

'lhe transverse seam caps A shown in the drawing are preferably made in three tions: namely, duplicate end members or sections 22, which extend from caves to points atjacent t0 the ridge, and a sins intermediate or ridge section 23, which overlaps the ridge end portions of the trio end sections tor a suitable distance on ach side of the ridge. The ridge section of each seam cap is preferably pressed outwardly adjacent to each end, as at 2%, in directions crosswise thereol to provide space between the overlapping portions of the ridge and end sections for strips of tar paper or other suitable material 25, which is dipped in paint before appli -a.tion. This arrangement provides a watertight joint between the overlapping ends of the cap sections w ll adapted to prevent the entering of water into the car.

Running boards extend longitndiiniily of the car at the ridge and are supported on the lateral top flanges of Z-bar running board saddles 2'? whose lateral base tlanges. rest on the ridge members 23 of the seam caps and are rigidly secured to said members by the rivets 28 that secure the ridge portion of the caps to the car-lines.

it is noted that by reason of the seam or carline cap being made in three sections the same cap sections are applicable to cars of diii'erent widths, and that the three thicknesses of metal formed by the base flanges ol' the running board saddles and the overlapping portions of the cap sections serve to strengthen the cap and carline in the region of the ridge.

it points adjacent to the eaves, where the 2181M caps are rigidly secured to the carlines by the rirets 29, the seam caps are provided with upstanding circular bosses that serve to prevent water from entering the car through the rivet holes. Mashing of these bosses during the operation of driving the rivets 29' is prevented by washers 31 which flanges 20 which overlap receive the rivets and are of thickness Sullicient to till the space between the bossed port ions of the raps and the tops of the carli cs. lhese washers are provided with downwardly projecting thinible portions or ferrules 3L, which fit the rivet holei-i in the cat-lines and serve to retain the washers in place while the caps are being placed in position.

in the modified construction illustrated in 5 and 6, each of the carlines compr ses an uoper member 30" and a lower ineni rer it otherwise. r gidly fastened to tea or gethcr with their side edge portions spaced :1- rt approximately the thicitncss of a root sheet throughout their length. 'lhronghont the greater portion of its length. the greater portion of the form of the lower member 31 is that of an inverted channel with wide horizontal flanges alon its lower edges; but the end portions 3;} ()fi' said lower member are first bent downwardly and then out- .vard horizontally so that the lower flanges said lower cal-line member will rest lint- '=e on the top of the side plate, to which e -J are secured by vertical rivets 3%. Pro teraoly the side plate 35 is of Z-sez-tion with its top liange 3t. extending inwardly horizontally and preferably the lower member 31 ot the carline does not extend beyond the vert cal web 37 of the side plates.

Throughout the greater portion of its length, the npper member 30 ot the carline also of in-.'ert d channel shape with wide horizontal flanges 39 at its lower side edges; but the end portions 40 of said upper memher are bent downwardly beyond the vertical planes of the vertical webs 3? ot the side platas but within the vertical. planes of the outer edges ot the horizontal flanges ll of said side plates; and the endmost portions of said lateral flanges ol'" the dowutu-rned portions Oil said upper carlinc member are oli'set inwardly at 42) and riveted flatwise against said vertical web of the side plate. By this arrangement, a space provided between the web 37 ol? the side plate and the downturned portion 40 of said upper member sntlicient to receive the end flanges 23 of the root sheets i t and permit play thereof. The upper and lower members of the carline are so proportioned that, when the upper member is superposed on the lower with their flat web portions in contact, the horizontal flanges of the upper member are spaced. from the horizontal flanges of the lower member a distance substantially equal to the thickness of the root sheet; and so that the spaces between the vertical legs of the channels will not only receive the upturned flanges of the roof sheets but will permit sai'd flanges to play to a reasonable extent back and forth bet-ween said vertical legs.

As stated above, the roof sheets extend troin side plate to side plate and have their ends tlanged downwardly heyo'mil the vertical webs ot' the side plates. In the normal position ol the root sheet, the downturned end therrot is spaced outwardly a sullicient distance beyond the vertical web of the side plate and a snl'licien t distance inwardly from the downturned ends of the upper member o l the carline to permit the root sheet to acconnnodate itseli to the distortions of the roof by sluing thereon. In such slning movement, two diagonally opposite corners oi the root sheet tend to move outwardly or away from the side plates, while the other two diagonally opposite corners tend to more toward the side plates, these movements being incidental to the sliding of the opposite side margins of the roof sheets in opposite directions endwise ot' the carlines adjacent to said edges respectively.

Among the advantages of the present construction are the great simplicity of the root sheets and their freedom from severe stresses: also the cheapness and simplicity of the construction of the carlines, their great strength for a given amount of metal, and the facility with which they adapt themselves to the application of the roof. It is particularly noted that the downward detlection oi the end portions of the lower n'ieinber oi? the carline serves to introduce a truss action that greatly increases the capacity of the carline for carrying vertical load; and it is also noted that the cross-section of the carline is such as to afford it great strength for resisting other stresses to which the carline is subject in practice.

Obviously the hereinbeitore described arrangeinent admits of considerable 1nodification without departing from the invention;

therefore I do not wish to he limited to the precise arrangement shown and described.

hat I claim is:

,1. A car root comprising side plates, can lines of inverted channel-s1)aped section extending from side plate to side plate, roo'l. sheets extending trom Side plate to side plate between carlines, metal caps of inverted channel-sl'iaped section extending from side plate to side plate, said caps straddling said ear-lines and the adjacent side marginal portions of said root sheets, the web portions of said carlines and caps being rigidly riveted together :[latwise at points a substantial disance inwardly 'tTOl'l'l the side plates and at points near the sides of the running board whereby said caps cooperate with said carlines in taking care of the carline stresses.

2. A car roof comprising side plates, carlines of inverted channel-shaped section extending from side plate to side plate, roof sheets extending from side plate to side plate between carlines and having upturned flanges at the sides thereof, and caps of inverted channel-shaped section straddling the carlines and the side marginal. portions of adjacent sheets, each of said caps extending from side plate to side plate and consisting of a plurality of sections arranged end to end in overlapped relation with their web portions riveted flatwise to the webs of the carlines at points inwardly from the side plates and at points near the sides of the running board, whereby said caps cooperate with said CHIllIlQS in taking care of the stresses to which said carlines are subject.

Signed at New Kensington, Pa. this 14th day of Nov., 1924:.

CHARLES DAVID BONSALL. 

